right, i tuned down 5 semitones from standard ( so now it's B standard) last night, and it was sunk in to the cavity ever so slightly. so my dad started to loosen the springs, but he gave up (don't know why, hat an idiot) and told me to tune up a semitone. so i did. and now it's ever so slightly raised out of the cavity :lol:
so, i think i just need to lower it by tightening the springs slightly and evenly, then live with the guitar in C standard. i originally wanted it in C# standard, but i'm not going to risk that much tension, even with powerful springs.
thanks for the help, MentalTan and tom, it's good shite. i'll report back if it buggers up again :D